| Constanta to Kluczbork | 675.23 mi (1,086.68 km) |
| Constanta to Knurow | 625.92 mi (1,007.33 km) |
| Constanta to Kobylka | 659.02 mi (1,060.59 km) |
| Constanta to Kokoszki | 837.55 mi (1,347.90 km) |
| Constanta to Kolbuszowa | 529.18 mi (851.64 km) |
| Constanta to Kolno | 707.02 mi (1,137.84 km) |
| Constanta to Kolo | 719.97 mi (1,158.67 km) |
| Constanta to Kolobrzeg | 906.03 mi (1,458.11 km) |
| Constanta to Koluszki | 663.51 mi (1,067.82 km) |
| Constanta to Komorniki | 782.33 mi (1,259.04 km) |
| Constanta to Konin | 731.59 mi (1,177.38 km) |
| Constanta to Konskie | 617.45 mi (993.69 km) |
| Constanta to Konstancin-Jeziorna | 646.81 mi (1,040.95 km) |
| Constanta to Konstantynow Lodzki | 676.91 mi (1,089.37 km) |
| Constanta to Koronowo | 796.56 mi (1,281.93 km) |
